Smart diaper capable of sensing the size of a soiled area

A smart diaper to be worn by a user, comprising:

• a segmented measurement strip comprising:
• a first electrode sensing circuit and a second electrode sensing circuit, which are positioned parallel to each other,
• a plurality segments of absorbent material between the first electrode sensing circuit and the second electrode sensing circuit, wherein the absorption material is configured to absorb a liquid;
• and
• segments of non-absorbent material between the plurality segments of absorbent material;
• and
• a controller configured to apply a voltage across the first electrode sensing circuit and the second electrode sensing circuit and to produce an electrical current that increases with number of segments of absorbent material that is soiled by the liquid.